mvar writes: A ban on GPL3 and similarly compatible, copyleft licensed software has been found in the terms of use for Microsoft's Windows Phone Marketplace. The terms, noted in a posting on open source evangelist Jan Wildeboer's blog, were originally noticed in a discussion among Nokia developers who were evaluating the issues involved with Nokia's switch to WP7; both Nokia's Symbian and MeeGo platforms have been free and open source friendly. The ban, in section 5.e of the terms, forbids any software which is subject to an "Excluded Licence"; it defines that in section 1.l as any licence which requires, as a condition of distribution, that the source code for the application be made available, or allow the creation of derivative works or redistribution at no charge. It specifically names GPLv3 licences and includes the General Public Licnce (GPL) version 3, the GNU Affero GPL version 3, and the GNU Lesser GPL version 3 as examples of excluded licences.